brian, his wife lauren, dog layla and that's their baby, who often gets into the car through the trunk. doesn't take long to figure out why they need to sell their car. >> it's a disaster. >> reporter: so, if your wife wanted to get in here she would have to sit like this, right? she would have to be, like, in the fetal position. the blue book value for the car is $9,000, but a local car dealer offered him four. he thinks it's worth more. so, brian is trying to sell it himself, putting up signs, listing it online at auto trader. two mant months later, zero ca. the car is in fair shape. and it's supposed to be a seller's market. so, we called autotrader.com and asked them to troubleshoot the gross' problem. they sent out brian moody, a sells expert who, with just a few simple changes, was able to help get the gross family an extra $3,000 for their car. moody explained there are basic things anyone can do to get a top price for their used car. key number one, clean it up. the coins, the traces of dog fur need to go. and lose the junk in the trunk. >> someone wants to picture their stuff